# # print("hello,pycharm and github")
# # 1219-night
# x=20
# y=None
# z=12.0
# q=str("hello,zhu")
# m=True
# w=bytes(3)
# print(x,y,z,q,m,w)
# print("1\n222")
# m1=float('INF')
# print(m)
# print(m)
# print(m1+3)
# print(float("inf"))
# print(float("-inf"))
# print(1+float("inf"))
# print(str(34)) #'34'
# print(bytes("hello".encode("utf-8"))) #b'hello'
# l1=[1,2.0,"34erere5",None,True,]
# print(l1)
# l2=list("hello")
# print(l2)
# print(l2[3])
# t1=tuple("hello")
# print(t1)
# t2=(1)
# print(t2)
# print(type(t2))
d1={'a':1,'w':3}
print(d1)
set([1,2,2])







